{
  "id": "0806.4917",
  "version": "v2",
  "published": "2008-06-30T15:16:21.000Z",
  "updated": "2008-11-03T08:38:02.000Z",
  "title": "Variational calculation of the ppK^- system based on chiral SU(3) dynamics",
  "authors": [
    "Akinobu Doté",
    "Tetsuo Hyodo",
    "Wolfram Weise"
  ],
  "comment": "18 pages, 12 figures, Resubmitted to Phys. Rev. C",
  "journal": "Phys.Rev.C79:014003,2009",
  "doi": "10.1103/PhysRevC.79.014003",
  "categories": [
    "nucl-th"
  ],
  "abstract": "The ppK^- system, as a prototype for possible quasibound Kbar nuclei,is investigated using a variational approach. Several versions of energy dependent effective KbarN interactions derived from chiral SU(3) dynamics are employed as input, together with a realistic NN potential (Av18). Taking into account theoretical uncertainties in the extrapolations below the KbarN threshold, we find that the antikaonic dibaryon ppK^- is NOT deeply bound. With the driving s-wave KbarN interaction the resulting total binding energy is B(ppK^-) = 20 $\\pm$ 3 MeV and the mesonic decay width involving KbarN -> \\pi Y is expected to be in the range 40 - 70 MeV. Properties of this quasibound ppK^- system (such as density distributions of nucleons and antikaon) are discussed. The \\Lambda(1405), as an I=0 quasi-bound state of Kbar and a nucleon, appears to survive in the ppK^- cluster. Estimates are given for the influence of p-wave KbarN interactions and for the width from two-nucleon absorption (KbarNN -> YN) processes. With inclusionof these effects and dispersive corrections from absorption, the ppK^- binding energy is expected to be in the range 20 - 40 MeV, while the total decay width can reach 100 MeV but with large theoretical uncertainties.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2008-11-03T08:38:02.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "11.30.Rd",
      "21.85.+d",
      "13.75.Jz",
      "21.45.-v"
    ],
    "keywords": [
      "chiral su",
      "variational calculation",
      "energy dependent effective kbarn interactions",
      "quasibound kbar nuclei"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review C",
      "year": 2009,
      "month": "Jan",
      "volume": 79,
      "number": 1,
      "pages": "014003"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 18,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 789452,
      "adsabs": "2009PhRvC..79a4003D"
    }
  }
}